(function ($) {
 "use strict";
 $.fn.treegridData = function (options, param) {
 //如果是调用方法
 if (typeof options == 'string') {
 return $.fn.treegridData.methods[options](this, param);
 }
 //如果是初始化组件
 options = $.extend({}, $.fn.treegridData.defaults, options || {});
 var target = $(this);
 //得到根节点
 target.getRootNodes = function (data) {
 var result = [];
 $.each(data, function (index, item) {
 if (!item[options.parentColumn]) {
  result.push(item);
 }
 });
 return result;
 };
 var j = 0;
 //递归获取子节点并且设置子节点
 target.getChildNodes = function (data, parentNode, parentIndex, tbody) {
 $.each(data, function (i, item) {
 if (item[options.parentColumn] == parentNode[options.id]) {
  var tr = $('<tr></tr>');
  var nowParentIndex = (parentIndex + (j++) + 1);
  tr.addClass('treegrid-' + nowParentIndex);
  tr.addClass('treegrid-parent-' + parentIndex);
  $.each(options.columns, function (index, column) {
  var td = $('<td></td>');
  td.text(item[column.field]);
  tr.append(td);
  });
  tbody.append(tr);
  target.getChildNodes(data, item, nowParentIndex, tbody)
 }
 });
 };
 target.addClass('table');
 if (options.striped) {
 target.addClass('table-striped');
 }
 if (options.bordered) {
 target.addClass('table-bordered');
 }
 if (options.url) {
 $.ajax({
 type: options.type,
 url: options.url,
 data: options.ajaxParams,
 dataType: "JSON",
 success: function (data, textStatus, jqXHR) {
  //构造表头
  var thr = $('<tr></tr>');
  $.each(options.columns, function (i, item) {
  var th = $('<th style="padding:10px;"></th>');
  th.text(item.title);
  thr.append(th);
  });
  var thead = $('<thead></thead>');
  thead.append(thr);
  target.append(thead);
  //构造表体
  var tbody = $('<tbody></tbody>');
  var rootNode = target.getRootNodes(data);
  $.each(rootNode, function (i, item) {
  var tr = $('<tr></tr>');
  tr.addClass('treegrid-' + (j + i));
  $.each(options.columns, function (index, column) {
  var td = $('<td></td>');
  td.text(item[column.field]);
  tr.append(td);
  });
  tbody.append(tr);
  target.getChildNodes(data, item, (j + i), tbody);
  });
  target.append(tbody);
  target.treegrid({
  expanderExpandedClass: options.expanderExpandedClass,
  expanderCollapsedClass: options.expanderCollapsedClass
  });
  if (!options.expandAll) {
  target.treegrid('collapseAll');
  }
 }
 });
 }
 else {
 //也可以通过defaults里面的data属性通过传递一个数据集合进来对组件进行初始化....有兴趣可以自己实现，思路和上述类似
 }
 return target;
 };
 $.fn.treegridData.methods = {
 getAllNodes: function (target, data) {
 return target.treegrid('getAllNodes');
 },
 //组件的其他方法也可以进行类似封装........
 };
 $.fn.treegridData.defaults = {
 id: 'Id',
 parentColumn: 'ParentId',
 data: [], //构造table的数据集合
 type: "GET", //请求数据的ajax类型
 url: null, //请求数据的ajax的url
 ajaxParams: {}, //请求数据的ajax的data属性
 expandColumn: null,//在哪一列上面显示展开按钮
 expandAll: true, //是否全部展开
 striped: false, //是否各行渐变色
 bordered: false, //是否显示边框
 columns: [],
 expanderExpandedClass: 'glyphicon glyphicon-chevron-down',//展开的按钮的图标
 expanderCollapsedClass: 'glyphicon glyphicon-chevron-right'//缩起的按钮的图标
 };
})(jQuery);